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Finding the Fourth Proportional to 73,373.60, 109,714.80 and 54,711.20

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Solution

The fourth proportional to 73,373.60, 109,714.80 and 54,711.20 is: 81,809.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,373.60 : 109,714.80 = 54,711.20 : x
  2. Step 2: Convert to fraction form
    73,373.60/109,714.80 = 54,711.20/x
  3. Step 3: Cross multiply
    73,373.60x = 109,714.80 × 54,711.20
  4. Step 4: Simplify right side
    73,373.60x = 6,002,628,365.76
  5. Step 5: Solve for x
    x = 6,002,628,365.76/73,373.60
  6. Step 6: Final answer
    x = 81,809.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.